Bridged Heterocyclium Di-Cationic closo-Icosahedral Perfluoroborane, Borane, and Carborane Salts via Aqueous, Open-Air Benchtop Synthesis (Preprint)

摘要

Thirteen unreported bridged triazolium and imidazolium di-cationic salts, that uniquely pair closo-icosahedral perfluoroborane (B12F12)(exp 2-), borane (B12H12)(exp 2-), or carborane (CB11H12)(exp -) anionic species with unsaturated bridged heterocyclium di-cations, were synthesized in water using an open-air benchtop method. This considerably extends the scope of a reported aqueous synthesis of binary Heterocyclium 2 (B12H12) and Heterocyclium (CB11H12) salts. Also, the one-step preparation of five new precursor bridged heterocyclium di-cationic di-halide salts using conventional procedures, and in one case a microwave-assisted procedure, is described.